Centrifugal pump.



R. DANIEL. CENTRIFUGAL PUMP. APPLICATION FILED OCT. 28, 1912.

Patented Oct. 12, 1915.

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CENTRIFUGAL PUMP.

APPLICATION FILED OCT. 28. 1912.

Patented Oct. 12, 1915.

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l To all whom itmay concern: I

I OFFICE.

, PAUL DANIEL, or JAMAICA, NEW YORK.

" ,CENTR1FUGAL PUMP.

Specification of Letters Patent.

Patented Oct. 1 1915.

Application filed October 28, 1912. Serial No. 728,l)'5-7.

and useful Improvements in Centrifugal Pumps; andI do hereby declare thefollowing to be a' full, clear, and exact description of the invention,such as will enable others skilled in the art to whichit appertains tomake and use the same.

The present invention has relation to an improved form of bearing forrotary devices whose bearings ordinarily afford paths. for leakage offluid under pressure, such,

for instance, as centrifugal pumps. The

improved bearing ofiers material and olovious advantages as over theordinary stuff- 7 bearing 26 which servesas. a forward abuting box.

I have illustrated-my invention in connection ,with a centrifugal pump,although the same is obviously applicable in other connections.

Figure 1 is a longitudinal section "of one" form of my improvement andFig. 2- is a similar view of a modification thereof.

As shown in the drawing the pump comprises avpump' chamber having asubstan-' tially cylindrical portion and a conical portion 11, unitingtherewith and preferably separable therefrom along a ,circular line, thetwo portions being firmly clamped together by means of the bolts 12. aThe fluid -to be pumped is led to the chamber ll'by means of'anyappropriate -inlet .pipe connected by means of the union 13'to the inletnipple 14 which connects with the narrow end of the conical chamber 11.The oppositeend of the cylindrical portion is provided with an outletchamber 15 which communicates with the delivery pipe 16.

' Within the chamber 11, is placed a rotary member which comprises theusual central shaft'l'? provided with one or more vanes 18. In the formshown fourof these vanes are used. The vanes inquestion diverge Isymmetrically-from the shaft 17 and are preferably bent at their endsas" shown at 19 so as to present a convex surface to the fluid as therotary memberjrevolvesi The I outer edges of the vanes are sodisposedthat" each comprises a tapering portion and 'preferably anon-tapering portlon 'is also. pro

vided so that in the preferred form these outer edges are made parallelto the elements of the cone 11 and cylinder respectively. These edgesarepreferably brbught very close to the walls of the chamber.

The chamber is provided with a hollow stem 20 which serves to afford afirm supa belt 23, but any well known means may be employed for thispurpose;

box in connection with my device I prefer to employ the constructionshown wherein a suitable bushing'24 closes the inner end of the "stem 20and against'which' bears a secvond bushing 25 provided with a conicalseat.

This latter isloose on the shaft. Behind ment for a spring 27 within thehollow of In" order to avoid the useofthe stufiing the bushing'24, I.place revolving thrusting r the stem 20,- and 'the outer end-of saidspring bears upon a sleeve 28 firmly-fixedto the shaft 21, as by meansof the-set-scre-w, 29, so that the" efl ort of the spring 27 a-ctsthrough the shaft 21 to cause the conical base of the shaft 17 ,tobear-firmly upon the seat 25 on the bushing 24 and thus afi'ord thenecessary tight joint. I prefer to so ar-v range the vanes 18 that theywill converge within theinlet nipple '14. I The mode .of. operation ofmy device is" to a point on the axis ofrevolution just as follows-Theentering water meets the *narrowestportions of the vanes 18, which aremoving at a relatively low rate of speed and as the water advances it isinfluenced 'by' a more and more rapidly moving portion of a each vane.The effect. of the rotating v'ane stream which hugs the inner-face ofthe ters' thecylindricalportionfof the pump chamber where the speed iscontinued by '6 1 the non-tapering portions of the'vanes-i and is toforce the entering water or other fluid to move in acon'stantlyexpanding conical I the condition of uniformity is established beforethe fluid enters-the outlet opening 15 top'ass'out through the deliveryp1p'e316 The :form of bearing, shown preserye's' continually a perfectlytight condition againstleakage, since all wear of the conicalsurfaces istaken up by the f In Fig. 2 is shown a modification of the devicewherein a strong flat spring 30 is fixed to the back of the pulley 22and bears upon a bushing 31 similar to the bushing 25 at the oppositeend. The spring sets into a transverse recess or groove 32 in the headof the bushing 31, and thus causes the latter to revolve with the pulleyand. shaft. This latter form is appropriate to larger pumps, and can beused with a short shaft 21, lubricated by means of an oil feed pipe 33.

What I claim is 1. In a machine operating with a fluid under pressure, achamber having a conical seat and a hollow extension beyond it, a

revoluble member having a conical portion fitting said seat, a shaft onsaid member passing through said extension, a conical seat on the outerend of said extension, a sleeve on said, shaft having a conicalportionfitting said second seat, .and a spring adapted to press both ofsaid conical portions against their respective seats while permittingsaid shaft and revoluble member to turn, substantially as described.

2. In a machine operating with a .fiuid under pressure, a chamber havinga conical said groove and abutting against said pulley,

substantially as described.

8. In a centrifugal pump, a pump chamber having a seat and an extensionbeyond it, a

revoluble member within said chamber having a portion fitting said seat,a shaft .on said member passing through said extension, a suitablyseated revoluble bushing on said shaft at the outer end of said exten-'sion having a transverse groove, a driving pulley on said shaft, and aspring on said,

pulley seated within saidgroove on said outer bushing, substantially asdescribed.

In testimony whereof, l afix my signature, in presence of two witnesses.

- PAUL DANIEL.

Witnesses:

' H. .S. MACKAYE, 'K. C. MEAD.

